University of Tasmania
Browse

File(s) under permanent embargo

Cluster analysis of commercial samples of Bauhinia spp. using HPLC-UV/PDA and MCR-ALS/PCA without peak alignment procedure

journal contribution
posted on 2023-05-18, 15:54 authored by Ardila, JA, Funari, CS, Andrade, AM, Cavalheiro, AJ, Carneiro, RL

Introduction - Bauhinia forficata Link. is recognised by the Brazilian Health Ministry as a treatment of hypoglycemia and diabetes. Analytical methods are useful to assess the plant identity due the similarities found in plants from Bauhinia spp. HPLC-UV/PDA in combination with chemometric tools is an alternative widely used and suitable for authentication of plant material, however, the shifts of retention times for similar compounds in different samples is a problem.

Objective - To perform comparisons between the authentic medicinal plant (Bauhinia forficata Link.) and samples commercially available in drugstores claiming to be “Bauhinia spp. to treat diabetes” and to evaluate the performance of multivariate curve resolution – alternating least squares (MCR-ALS) associated to principal component analysis (PCA) when compared to pure PCA.

Methodology - HPLC-UV/PDA data obtained from extracts of leaves were evaluated employing a combination of MCR-ALS and PCA, which allowed the use of the full chromatographic and spectrometric information without the need of peak alignment procedures.

Results - The use of MCR-ALS/PCA showed better results than the conventional PCA using only one wavelength. Only two of nine commercial samples presented characteristics similar to the authentic Bauhinia forficata spp., considering the full HPLC-UV/PDA data.

Conclusion - The combination of MCR-ALS and PCA is very useful when applied to a group of samples where a general alignment procedure could not be applied due to the different chromatographic profiles. This work also demonstrates the need of more strict control from the health authorities regarding herbal products available on the market.

History

Publication title

Phytochemical Analysis

Volume

26

Issue

5

Pagination

367-373

ISSN

0958-0344

Department/School

School of Natural Sciences

Publisher

John Wiley & Sons Ltd

Place of publication

The Atrium, Southern Gate, Chichester, England, W Sussex, Po19 8Sq

Rights statement

Copyright 2015 John Wiley & Sons, Ltd.

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the chemical sciences

Usage metrics

    University Of Tasmania

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC